ATOSSA THERAPEUTICS, INC. - ATOS

Detailed investor-level table based on 13F positions.

Shareholders (13F)

Quarter: Q4 2025 · Compare: Q3 2025
13D/13G major owners: Ownership tab.
Methodology: Market value and % of portfolio use SEC reported VALUE ($000). For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received. Details.
Rows: 0
Investor History Status Shares held Market value ($000) % of portfolio Previous % Rank Change in shares % change in shares Source Date reported
VANGUARD GROUP INC History Added to 6,147,838 3,627 0.0% 0.0% 1 +68,994 1.13% Q4 2025 Jan 29, 2026
AMERIPRISE FINANCIAL INC History Added to 3,791,061 2,236 0.0% 0.0% 2 +839,556 28.45% Q4 2025 Feb 17, 2026
RENAISSANCE TECHNOLOGIES LLC History Added to 2,062,838 1,217 0.0% 0.0% 3 +514,175 33.2% Q4 2025 Feb 12, 2026
BlackRock, Inc. History No change 1,997,627 1,178 0.0% 0.0% 4 0 0.0% Q4 2025 Feb 12, 2026
GEODE CAPITAL MANAGEMENT, LLC History Added to 1,371,909 809 0.0% 0.0% 5 +9,627 0.71% Q4 2025 Feb 09, 2026
MILLENNIUM MANAGEMENT LLC History Reduced 1,242,868 733 0.0% 0.0% 6 -425,780 -25.52% Q4 2025 Feb 17, 2026
JACOBS LEVY EQUITY MANAGEMENT, INC History New 1,048,289 618 0.0% 7 +1,048,289 New Q4 2025 Feb 13, 2026
CITADEL ADVISORS LLC History Added to 765,715 451 0.0% 0.0% 8 +443,446 137.6% Q4 2025 Feb 17, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP History Added to 621,087 366 0.0% 0.0% 9 +337,385 118.92% Q4 2025 Feb 17, 2026
STATE STREET CORP History Added to 596,485 351 0.0% 0.0% 10 +141,990 31.24% Q4 2025 Feb 13, 2026
UBS Group AG History Added to 390,008 230 0.0% 0.0% 11 +129,286 49.59% Q4 2025 Jan 29, 2026
NORTHERN TRUST CORP History Added to 288,399 170 0.0% 0.0% 12 +25,022 9.5% Q4 2025 Feb 17, 2026
JANE STREET GROUP, LLC History Added to 286,498 169 0.0% 0.0% 13 +124,070 76.38% Q4 2025 Feb 12, 2026
Connor, Clark & Lunn Investment Management Ltd. History Added to 266,010 156 0.0% 0.0% 14 +17,396 7.0% Q4 2025 Feb 10, 2026
Graham Capital Management, L.P. History Added to 211,369 124 0.0% 0.0% 15 +45,923 27.76% Q4 2025 Feb 17, 2026
XTX Topco Ltd History Added to 169,261 99 0.0% 0.0% 16 +144,412 581.16% Q4 2025 Feb 17, 2026
SIMPLEX TRADING, LLC History Added to 87,300 51 0.0% 0.0% 17 +80,678 1218.33% Q4 2025 Feb 11, 2026
CHARLES SCHWAB INVESTMENT MANAGEMENT INC History No change 80,000 47 0.0% 0.0% 18 0 0.0% Q4 2025 Feb 13, 2026
ACADIAN ASSET MANAGEMENT LLC History Reduced 79,414 46 0.0% 0.0% 19 -17,873 -18.37% Q4 2025 Feb 10, 2026
GROUP ONE TRADING LLC History Reduced 73,962 43 0.0% 0.0% 20 -94,838 -56.18% Q4 2025 Feb 12, 2026
Qube Research & Technologies Ltd History Reduced 72,802 42 0.0% 0.0% 21 -65,841 -47.49% Q4 2025 Feb 17, 2026
BANK OF AMERICA CORP /DE/ History Reduced 67,654 39 0.0% 0.0% 22 -87,515 -56.4% Q4 2025 Feb 17, 2026
MORGAN STANLEY History Reduced 61,500 36 0.0% 0.0% 23 -50,848 -45.26% Q4 2025 Feb 13, 2026
Point72 Asset Management, L.P. History New 48,092 28 0.0% 24 +48,092 New Q4 2025 Feb 17, 2026
&PARTNERS History New 43,000 25 0.0% 25 +43,000 New Q4 2025 Feb 17, 2026
JPMORGAN CHASE & CO History Reduced 38,067 22 0.0% 0.0% 26 -148 -0.39% Q4 2025 Feb 11, 2026
LPL Financial LLC History Added to 29,469 17 0.0% 0.0% 28 +913 3.2% Q4 2025 Feb 11, 2026
REGIONS FINANCIAL CORP History No change 30,000 17 0.0% 0.0% 27 0 0.0% Q4 2025 Jan 27, 2026
MARSHALL WACE, LLP History Reduced 28,072 16 0.0% 0.0% 29 -57,004 -67.0% Q4 2025 Feb 13, 2026
R Squared Ltd History New 28,099 16 0.01% 30 +28,099 New Q4 2025 Jan 30, 2026
TWO SIGMA SECURITIES, LLC History New 24,508 14 0.0% 32 +24,508 New Q4 2025 Feb 17, 2026
Sigma Planning Corp History No change 24,000 14 0.0% 0.0% 31 0 0.0% Q4 2025 Jan 30, 2026
TWO SIGMA INVESTMENTS, LP History New 23,452 13 0.0% 33 +23,452 New Q4 2025 Feb 17, 2026
PFG Investments, LLC History Added to 21,750 12 0.0% 0.0% 35 +500 2.35% Q4 2025 Jan 26, 2026
LVM CAPITAL MANAGEMENT LTD/MI History No change 21,000 12 0.0% 0.0% 34 0 0.0% Q4 2025 Jan 12, 2026
StoneX Group Inc. History New 19,871 11 0.0% 36 +19,871 New Q4 2025 Feb 12, 2026
TWO SIGMA ADVISERS, LP History New 18,300 10 0.0% 38 +18,300 New Q4 2025 Feb 17, 2026
GREENBERG FINANCIAL GROUP History New 18,216 10 0.0% 37 +18,216 New Q4 2025 Jan 22, 2026
DnB Asset Management AS History No change 15,600 9 0.0% 0.0% 39 0 0.0% Q4 2025 Feb 05, 2026
Baader Bank Aktiengesellschaft History New 21,364 7 0.0% 40 +21,364 New Q4 2025 Feb 05, 2026
RAYMOND JAMES FINANCIAL INC History Added to 11,323 6 0.0% 0.0% 41 +508 4.7% Q4 2025 Feb 18, 2026
Focus Financial Network, Inc. History Added to 10,350 6 0.0% 0.0% 45 +200 1.97% Q4 2025 Jan 12, 2026
Janney Montgomery Scott LLC History No change 10,000 6 0.0% 0.0% 42 0 0.0% Q4 2025 Feb 11, 2026
Bank of New York Mellon Corp History No change 11,147 6 0.0% 0.0% 43 0 0.0% Q4 2025 Feb 10, 2026
J. L. Bainbridge & Co., Inc. History No change 11,121 6 0.0% 0.0% 44 0 0.0% Q4 2025 Jan 14, 2026
OSAIC HOLDINGS, INC. History No change 8,847 5 0.0% 0.0% 46 0 0.0% Q4 2025 Feb 17, 2026
FMR LLC History No change 7,365 4 0.0% 0.0% 47 0 0.0% Q4 2025 Feb 17, 2026
Tower Research Capital LLC (TRC) History Added to 3,999 2 0.0% 0.0% 48 +1,483 58.94% Q4 2025 Feb 17, 2026
NewEdge Advisors, LLC History No change 5,000 2 0.0% 0.0% 49 0 0.0% Q4 2025 Feb 18, 2026
Rockefeller Capital Management L.P. History No change 5,000 2 0.0% 0.0% 50 0 0.0% Q4 2025 Mar 16, 2026
ROYAL BANK OF CANADA History New 943 1 0.0% 52 +943 New Q4 2025 Feb 17, 2026
HUNTINGTON NATIONAL BANK History No change 3,000 1 0.0% 0.0% 51 0 0.0% Q4 2025 Feb 09, 2026
GSA CAPITAL PARTNERS LLP History Closed out 0 0 0.02% -310,754 -100.0% Q3 2025 Nov 07, 2025
Squarepoint Ops LLC History Closed out 0 0 0.0% -253,343 -100.0% Q3 2025 Nov 14, 2025
COMMONWEALTH EQUITY SERVICES, LLC History Closed out 0 0 0.0% -46,001 -100.0% Q3 2025 Oct 22, 2025
Gallagher Capital Advisors, LLC History Closed out 0 0 0.02% -31,575 -100.0% Q3 2025 Nov 06, 2025
HRT FINANCIAL LP History Closed out 0 0 0.0% -16,932 -100.0% Q3 2025 Nov 14, 2025
NorthRock Partners, LLC History Closed out 0 0 0.0% -16,750 -100.0% Q3 2025 Nov 14, 2025
Jain Global LLC History Closed out 0 0 0.0% -16,707 -100.0% Q3 2025 Nov 14, 2025
VICTORY CAPITAL MANAGEMENT INC History Closed out 0 0 0.0% -14,864 -100.0% Q3 2025 Nov 12, 2025
Optiver Holding B.V. History New 838 0 +838 New Q4 2025 Feb 17, 2026
Allworth Financial LP History New 702 0 +702 New Q4 2025 Feb 05, 2026
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO History New 500 0 +500 New Q4 2025 Feb 10, 2026
CWM, LLC History Reduced 50 0 -175 -77.78% Q4 2025 Jan 26, 2026
HARBOUR INVESTMENTS, INC. History Reduced 1,656 0 0.0% -55 -3.21% Q4 2025 Feb 09, 2026
True Wealth Design, LLC History Closed out 0 0 -29 -100.0% Q3 2025 Oct 21, 2025
BNP PARIBAS FINANCIAL MARKETS History Added to 1,497 0 0.0% +7 0.47% Q4 2025 Feb 10, 2026
EverSource Wealth Advisors, LLC History Closed out 0 0 -2 -100.0% Q3 2025 Nov 10, 2025
SBI Securities Co., Ltd. History Reduced 1,565 0 0.0% -1 -0.06% Q4 2025 Feb 03, 2026
WELLS FARGO & COMPANY/MN History No change 83 0 0 0.0% Q4 2025 Feb 13, 2026
NBC SECURITIES, INC. History No change 150 0 0 0.0% Q4 2025 Jan 29, 2026
JONES FINANCIAL COMPANIES LLLP History No change 700 0 0 0.0% Q4 2025 Feb 17, 2026
Clearstead Advisors, LLC History No change 70 0 0 0.0% Q4 2025 Feb 09, 2026
NISA INVESTMENT ADVISORS, LLC History No change 350 0 0 0.0% Q4 2025 Jan 15, 2026
HANTZ FINANCIAL SERVICES, INC. History No change 82 0 0 0.0% Q4 2025 Feb 09, 2026
Arax Advisory Partners History No change 42 0 0 0.0% Q4 2025 Feb 13, 2026
TD Waterhouse Canada Inc. History No change 1,555 0 0.0% 0 0.0% Q4 2025 Jan 27, 2026